EP0225978A2 - Dispositif à balais pour moteurs électriques - Google Patents

Dispositif à balais pour moteurs électriques Download PDF

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Publication number
EP0225978A2
EP0225978A2 EP86113607A EP86113607A EP0225978A2 EP 0225978 A2 EP0225978 A2 EP 0225978A2 EP 86113607 A EP86113607 A EP 86113607A EP 86113607 A EP86113607 A EP 86113607A EP 0225978 A2 EP0225978 A2 EP 0225978A2
Authority
EP
European Patent Office
Prior art keywords
brush
collector
connections
cap
brushes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86113607A
Other languages
German (de)
English (en)
Other versions
EP0225978A3 (fr
Inventor
Emilio Rodriguez
Antonio Martinez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Braun GmbH
Original Assignee
Braun GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Publication of EP0225978A2 publication Critical patent/EP0225978A2/fr
Publication of EP0225978A3 publication Critical patent/EP0225978A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/38—Brush holders
    • H01R39/39—Brush holders wherein the brush is fixedly mounted in the holder

Definitions

  • the invention relates to a brush assembly for electric motors, comprising an insulating material, the motor front housing cap with arranged on the inside of the cap, parallel to the motor axis, with the end wall of the cap and its projections penetrating openings for receiving and fixing resilient collector brushes and with these corresponding brush connections, the collector brushes and the brush connections forming separate components.
  • Such a brush arrangement is already known from DE-AS 24 58 991.
  • Such brush arrangements are primarily characterized by a division of their collector brushes in two, namely into a section forming the actual brushes and a section forming the electrical connections thereof.
  • This division is advantageous in that only the first section, which forms the actual brush, in order to ensure an always optimal contact on the rotating collector interacting with the collector brush, must consist of non-corrosive and therefore relatively expensive material, while the second, the electrical one Connection forming section only needs to be made of a conventional electrically conductive material and is therefore less expensive and less problematic in terms of its dimensions.
  • a disadvantage of this brush arrangement in electric motors with a rotating drive axis consists in the relatively complex assembly of the collector brushes and the brush connections, which have to be assembled and fastened from the inside of the cap before the electric motor is closed. It follows from this that additional fastening means (soldering or plugs) are required to connect the brush connections to a power source from the outside, which connect the brush connections to the power source. Installation of the additional fasteners is therefore only possible after the electric motor has been installed, which complicates the installation.
  • Another disadvantage is that the collector brushes are held only frictionally by the brush connections in the openings, which can lead to the collector brushes loosening quickly due to the vibrations acting on them and thus a total failure of the electric motor can be caused.
  • the object of the invention is to eliminate the disadvantage of loosening the collector brushes and at the same time to create an electric motor in which the assembly of the brush connections with the electric motor mounted is possible without additional fasteners being required.
  • the brush arrangement according to the invention thus enables easy assembly and safe prior to assembly of the electric motor Attachment of the collector brushes within the housing cap of the electric motor. After the electric motor has been installed, the brush connections can then be easily inserted from the outside into the openings provided for this purpose in which they come into contact with the collector brushes and are held in place by the latter. This makes it possible for the brush connections to be connected to the current-carrying cables even before the brush connections are installed on the electric motor, and not only when, as in the prior art, the contact tabs (brush connections) are integrated in the electric motor.
  • each projection of the housing cap is formed with a flat support which serves to hold the collector brushes axially, onto which the angled fastening tabs associated with each collector brush can be placed and by means of a fastening tab formed over the bearing via a hole penetrating centering pin can be fixed on the cap-side projection.
  • the sections of the collector brushes inserted into the end wall of the housing cap from opposite sides and their brush connections, which meet in each of the two openings, are electrically actuated by an effective locking mechanism depending on the insertion connected to each other and the brush connections are determined in their functional position. This ensures that the brush connections are held in place in the openings by the locking mechanism.
  • the locking mechanism is formed from a respective resilient and protruding tab belonging to the base section of the collector brush, which extends parallel to the latter, and the brush connection resiliently rests on the tab.
  • the width of the opening (slot) is dimensioned so that the two parts are pressed into it frictionally next to each other.
  • the brush connections are formed on a circuit arrangement that controls the electric motor. It is hereby achieved according to the invention that a switch which switches the electric motor on or off can be fastened directly to the electric motor via the brush connections, so that additional fastening means for the switch are not required.
  • the brush arrangement according to the invention comprises a pair of contacts consisting of two collector brushes 1 and 2, which in the usual way with a rotating collector (not shown) of the rotor (not shown), for example for driving a household or Personal care device serving electric motor cooperates.
  • the individual collector brushes 1 and 2 are each held in an inwardly projecting section 7 and 8 of a housing cap 10 which is assigned on the end face in the stator housing 9 of the electric motor.
  • each of the sections 7 and 8 is formed with a receiving slot (opening) 12 or 13 which penetrates the end wall 11 of the housing cap 10 and into which the opposite the longitudinal extension of the collector brushes 1 or 2, the web section 14 or 15 bent at right angles can be inserted in the axial direction of the housing cap 10 ', in a functionally appropriate manner from the inside of the cap, ie from the cavity 16.
  • the base section 14 or 15 of the collector brush 1 or 2 is each provided with a right-angled fastening tab 17 or 18, which extends parallel to the plane of the end wall 11 and which, when the collector brushes 1 or 2 are in use, has one on each of the sections 7 and 8 of the housing cap 10 molded supports 19 and 20 rest.
  • the pins 21 and 22 molded onto the supports each penetrate a centering hole 23 and 24 of the fastening tabs 17 and 18, respectively by rivet-like deformation the immovable and permanent fixation of the collector brushes 1 and 2 on the housing cap 10 of the electric motor.
  • the collector brushes 1 and 2 which are thus fixed on the end face of the housing cap 10, lie with their square ends on their free ends 25 and 26, square carbon rods 27 and 28 under self-resilience against the collector of the rotor, the rotor shaft (not shown) of one of the housing caps 10 associated pivot bearing 30 is added.
  • the collector brushes 1 and 2 are only pressed radially outwards when the rotor is installed and are then always pre-loaded on the rotor.
  • the width and depth of the slot-shaped openings 12 and 13 which define the collector brushes 1 and 2 are dimensioned such that in addition to the brush-side base section 14 and 15 there is also a brush connection (connection contact) 32 and 33 in the openings 12 and 13 can be inserted.
  • This brush connection 32 and 33 here consists of a flat, rigid contact strip made of electrically conductive material, for example brass, which can be inserted from the outside into the end wall 11 of the housing cap 10 completely penetrating receiving slot 12 or 13, which by the conical, outer Inputs 34 and 35 of these two slot-shaped openings 12, 13 is facilitated.
  • the brush connections are connected to a circuit arrangement S which controls the running of the electric motor.
  • each adjacent base sections 14 and 15 and the connecting contacts 32 and 33 are now fixed to each other within the slot-shaped openings 12 and 13 by a respective locking mechanism 36 and 37, which becomes effective when the same is plugged together.
  • This locking mechanism 36 or 37 is formed by a bent-out, resilient tab 38 or 39, which interacts with the corresponding terminal contact 32 or 33 in the clamp, by pressing the same against the inner walls of the slot-shaped opening 12 or 13th requirement for the function of this locking mechanism is that the tab 37 or 38 extends in the insertion direction of the contact 32 or 33.
  • the flap 37 or 38 which performs the clamping function can also achieve the same success if it is assigned to the connecting contacts 32 or 33 and acts on the base sections 14 or 15 of the collector brushes 1 and 2 in the manner described above.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Motor Or Generator Frames (AREA)
EP86113607A 1985-12-17 1986-10-02 Dispositif à balais pour moteurs électriques Withdrawn EP0225978A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES1985291075U ES291075Y (es) 1985-12-17 1985-12-17 Dispositivo puente escobillas para utilizacion en motores electricos de colector
ES291075U 1985-12-17

Publications (2)

Publication Number Publication Date
EP0225978A2 true EP0225978A2 (fr) 1987-06-24
EP0225978A3 EP0225978A3 (fr) 1989-04-26

Family

ID=8438847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86113607A Withdrawn EP0225978A3 (fr) 1985-12-17 1986-10-02 Dispositif à balais pour moteurs électriques

Country Status (3)

Country Link
US (1) US4774430A (fr)
EP (1) EP0225978A3 (fr)
ES (1) ES291075Y (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19725082A1 (de) * 1997-06-13 1999-01-07 Itt Mfg Enterprises Inc Kohlebürste für eine elektrische Maschine

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2219695B (en) * 1988-06-06 1992-07-01 Johnson Electric Ind Mfg An electric motor
JPH0615501Y2 (ja) * 1988-07-15 1994-04-20 アスモ株式会社 小型モータ
US5055728A (en) * 1990-08-09 1991-10-08 Ryobi Motor Products Corp. Motor assembly with combined armature shaft bearing support and brush tube holder
DE4040002A1 (de) * 1990-12-14 1992-06-17 Bosch Gmbh Robert Aggregat zum foerdern eines als elektrolyt wirkenden mediums, insbesondere kraftstoff
US5465016A (en) * 1993-09-08 1995-11-07 Electrolux Corporation Electric motor and brush/shunt assembly therefor
US5818142A (en) * 1995-07-27 1998-10-06 Black & Decker Inc. Motor pack armature support with brush holder assembly
JP3699644B2 (ja) * 2000-02-10 2005-09-28 アスモ株式会社 給電端子内蔵モータ
FR2807877B1 (fr) * 2000-04-14 2002-10-31 Meritor Light Vehicle Sys Ltd Connecteur a concentrateur de flux pour moteur electrique
FR2810168B1 (fr) * 2000-06-08 2005-06-17 Meritor Light Vehicle Sys Ltd Moteur electrique notamment motoreducteur pour l'activation d'equipements fonctionnels de vehicules
US7518274B1 (en) 2006-06-12 2009-04-14 Mancl Dennis J Motor bracket with integral terminals
US7705512B2 (en) 2006-10-06 2010-04-27 Remy International, Inc. Dynamoelectric machine conductor
US7696666B2 (en) 2006-10-06 2010-04-13 Remy Technologies, L.L.C. Dynamoelectric machine grommet
US7466056B2 (en) 2006-10-06 2008-12-16 Remi International, Inc Dynamoelectric machine brush holder assembly and method
US20080242570A1 (en) * 2007-03-26 2008-10-02 John David Carter Liquid composition system having a visual indication change
EP2126028A1 (fr) * 2007-03-26 2009-12-02 The Procter and Gamble Company Système de composition détergente liquide avec changement d'indication visuelle
RU2467451C2 (ru) * 2008-05-16 2012-11-20 Шлюмбергер Текнолоджи Б.В. Коммутационная система электродвигателя постоянного тока
US8742643B2 (en) 2008-05-16 2014-06-03 Schlumberger Technology Corporation Commutation system for a DC motor
CN109424551A (zh) * 2017-08-23 2019-03-05 杭州三花研究院有限公司 电动泵
CN115021512B (zh) * 2022-08-08 2022-10-21 常州市昊升电机股份有限公司 一种电机智能化生产系统及工作方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB781107A (en) * 1954-03-08 1957-08-14 Globe Ind Inc Improvements relating to electric motors
US3450916A (en) * 1965-08-18 1969-06-17 Takaichi Mabuchi Brush supporting means for miniature electric motors
DE2458991C3 (de) * 1973-12-28 1980-11-20 Mabuchi Motor Co., Ltd., Tokio Bürstenanordnung für einen Miniaturmotor
US4195242A (en) * 1977-04-28 1980-03-25 Mabuchi Motor Co., Ltd. Brush device
JPS5714535Y2 (fr) * 1977-09-08 1982-03-25
JPS5714537Y2 (fr) * 1977-10-19 1982-03-25
JPS5757493Y2 (fr) * 1978-01-24 1982-12-09
US4389588A (en) * 1982-03-24 1983-06-21 Alexander Rankin Current carrying constant force brush holder assembly
US4523116A (en) * 1983-03-31 1985-06-11 Black & Decker, Inc. Electrical connection system for motors
US4638203A (en) * 1985-06-21 1987-01-20 Matsushita Electric Industrial Co., Ltd. Attachment structure for brush holder springs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19725082A1 (de) * 1997-06-13 1999-01-07 Itt Mfg Enterprises Inc Kohlebürste für eine elektrische Maschine
US6011342A (en) * 1997-06-13 2000-01-04 Itt Manufacturing Enterprises, Inc. Carbon brush for an electric machine

Also Published As

Publication number Publication date
ES291075U (es) 1986-04-16
US4774430A (en) 1988-09-27
EP0225978A3 (fr) 1989-04-26
ES291075Y (es) 1988-04-16

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Inventor name: MARTINEZ, ANTONIO

Inventor name: RODRIGUEZ, EMILIO